logo Calflora, a 501c3 non-profit
Taxon  Report  
SIGN IN - REGISTER
Zannichellia palustris  L.
Horned pondweed
© 2021 Ron Vanderhoff
© 2020 Donald Burk
© 2021 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2022 Donald Burk
© 2022 catchang
© 2023 catchang
© 2023 arheyman01
© 2023 julialarke
© 2020 Ron Vanderhoff
© 2021 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2024 bryceking
Zannichellia palustris is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Zannichellia
Family: Zannichelliaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Wetlands: Occurs in wetlands

Communities: wetland-riparian

Name Status:
Accepted by JEF + PLANTS + POWO

Alternate Names:
PLANTSZannichellia major
PLANTSZannichellia palustris var. major
PLANTSZannichellia palustris var. stenophylla
Information about  Zannichellia palustris from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (ZAPA)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 03/28/2025).